<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div id="app">
    <h2 v-if=isShow>{{message}}</h2>
    <h1 v-else>isShow为false时显示我</h1>
</div>

<script src="../js/vue.js"></script>
<script>
    const  app = new Vue({
        el:'#app',
        data:{
            message: '卢本伟牛逼！',
            isShow: true
        }
    })
</script>
</body>
</html>